People have mentioned problems such as "it only has 5 buttons, how would that work?" I wonder if they realize that my GPS has the same amount (including the directional control).

I thought it would be a decent piece of equipment if you wanted a GPS/PDA combo. The iQue apparently is inadequate from what I have heard (although the geocachers out there complain about everything). The GBA SP supposedly does not have the horsepower to even compete with the MIPS processor in the iQue.

It does seem a bit bulky and a $250 addition onto the cost of a GBA seems a bit much.

that's my point. 1) it is expensive + $90 for the GBA 2) the GBA is rugged enough for a child to drop it over and over, BUT I don't think it is weatherproof or something you want to drop int he mud while caching.
However "Pre-Order and Save! Regularly $249 US, now $199 US. Limited time only"

I looked through all the features, it does have some pretty nifty stuff.

The GBA is just a super nintendo, not much power there. but you don't need that much for GPS.

I could see it being cool because it keeps the kids happy until you get to the cache site

I want a GBA SP. It's mainly a SNES (same procs almost), many SNES games have been released for it. Also I have tried the new Metroid which is great! (Oh, I was going to school for Game Programming at the Minnesota School of Business until I had to move back to WI recently and am a kid at heart!)

I also wonder if an external antanna can be attached, because where the unit is located on an SP is where your palms normally are. On a regular GBA it would be on top.

I wonder how much making something like that, but for a PDA would cost. I saw a Garmin GPS 15 go recently on ebay for $40. That's a small GPs unit that is about hte size of a commemerative stamp. It has simple serial output and antenna hookup. Could easily wire to the serial input on a PDA. Then it is a matter of having software that can use it's output.

If you want a cheap PDA with the ability to play games and also be a GPS, Its hard to beat buying a used Handspring Visor model with a springboard slot for $35 or so from EBAY, and then buying a surplus Magellan GPS Companion for the Visor for $40-$60 from one of the overstock places like consumerdepot.com. I put together this combination for $75 (with shipping) last fall to replace one just like it that I left behind at a cache. If you want maps, you can buy the Mapopolis software for $45, which runs on the Visor and works with the GPS Comapnion.

So for about $125, you can put together a handheld that is roughly equivalent. But no Pokemon.